Pitman connection.



No. c6355.

Patented May li, i904.

PATENT f OFFICE.

PERES E. DIX, OF DELAWARE, OHIO. i

PITMAN CONNECTION.

SPECIFICATION forming part of Letters Patent No. 760,855, dated May 24, 1904. Application filed February 1l, 1904. Serial No. 193,203. (No model.)

To all whom t may concern,.-

Be it known that I, PERES E. DIX, a citizen of the United States, residing at Delaware, in the county of Delaware and State of Ohio, have invented new and useful Improvements inv Pitman Connections, of which the following is a specification.

` The invention relates vto pitman connections, and has for its object to provide simple, easilyassembled, and readily-adjustable means for connecting the end of a pitman with a reciprocating cutter-bar of a mowing-machine or with the like.

The invention consists in the construction hereinafter described and pointed out.

In the accompanying drawings, Figure l is a perspectiveof the improvement applied to a cutter-bar.` Fig. 2 is a longitudinal section of the same. Fig. 3 is a similar section taken transversely to the view in Fig. l, and Fig. 4

v is a transverse section taken approximately at therewith. the top to bottom to provide for a movement' right angles to the View in Fig. 3.

Numeral l indicates a pitman, and 2 a cutter-bar or like part to be reciprocated thereby, as usual in mowing-machines and in other machines comprising similarly-reciprocated parts. The bar 2has a socket 3 to receivethe head 4 of the outer end of the pitman. This socket has a main chamber whose walls by preference are undercut on the interior, substantially as indicated in the drawingsV and said chamber or space communicates with a slot 5, in which the neck 6 of the pitman works. The vertical walls of the socket are preferably undercut, as shown at 7 and the pitman-head has undercut parts 8 to engage rI he said parts 8 are curved from of the head in its socket and of the neck in the slot 5. The head is also curved at its end, as indicated at 9, and its sides are curved substantially as shown. The head and neck of the pitman are split, as indicated at 10'.

' spond with said nut.

A screw or screw-threaded bolt having a frusto-conical head is denoted by' l1, and a frusto-pyramidal nut by 12. A seat or suitably-shaped opening is provided between the parts of the head for the screw and nut. Preferably one end of this opening will be round, and the other end, in which the wedgeshaped nut is held, will be angular to corre- The parts .are assem- Vbled by placing the screw in the seat l2 and engaging it with the frusto-conical or wedgeshaped nut and then inserting the pitman-` head in the socket, whereupon by suitably turning the screw the nut can be drawn farther into its seat, with the effect to spread the head by crowding its sections apart, and this can also be done whenever it is desirable to adjust the head to compensate for wear or whenever it is desired to'disconnect the parts. Because of the undercut sides of the socket a very small expansion of the head is sufficient t0 prevent all danger of its accidental displacement whatever be the position of the parts.

` The side walls of the slot 5 can be cut away on their exterior, as at 13, to reduce the weight. The undercut bearingsurfaces ofv the head and the socket adjacent the neck tend expansible head, and the bar having an openv socket and a comparatively narrow slot to receive the head and neck of the pitman respectively.

2. The combination of the pitman having an expansible head, and the bar having an open socket to receive the head, said socket having undercut walls at its sides.

3. In a pitman the head having the undercut cheeks in combination with a part having a corresponding undercut socket.

4. In a pitman,I the head having cheeks 8 and apart having socket with an open side, said cheeks being rounded in a direction from the open side of the socket to the opposite side.

5. The combination of a pitman having a my hand in presence of two subscribing witnesses. n

PERES E. DIX. -VVitnessess KARL .ZIEGLER, GEORGE KEEFER. 

